Aluminum Substrate with White Solder Mask Tawada
A cikin tsarin sarrafawa da samarwa na PCB, ɗaukar hoto na tawada abin rufe fuska yana da matukar mahimmanci.
Mashin solder a cikin babban aikin PCB shine don kare kewaye, don hana mai gudanarwa kada a lalata shi da manna mai siyar; don hana mai gudanarwa saboda danshi ko sinadarai da ke haifar da gajeriyar da'ira; don hana PCB m matakai a cikin samarwa da kuma splicing na mummunan dauki lalacewa ta hanyar da'irar; da nau'ikan yanayi masu tsauri akan mamayewar PCB da sauransu.
PCB a ɓangarorin biyu na Layer na jan karfe, babu abin rufe fuska PCB da aka fallasa a cikin iska yana da sauƙi a sanya oxygen, kuma ya zama samfura marasa lahani, amma kuma yana shafar aikin lantarki na PCB. Saboda haka, PCB kewaye hukumar surface dole ne ya sami Layer wanda zai iya toshe PCB da iska hadawan abu da iskar shaka dauki na m shafi, da kuma wannan Layer na shafi an rufe solder mask Paint kayan solder mask. Daban-daban launuka na solder tsayayya fenti suma sun zo cikin kasancewa, suna kafa PCB mai launi, da kuma solder tsayayya launi da ingancin PCB da aikin lantarki ba shi da kusan alaƙa.
PCB surface kuma yana buƙatar walda kayan aikin lantarki, wajibi ne a sami wani ɓangare na Layer na jan karfe da aka fallasa don sauƙaƙe abubuwan waldawa, wannan ɓangaren Layer Layer shine kushin. Kamar yadda aka ambata a sama, murfin jan karfe da aka fallasa yana da saukin kamuwa da iskar shaka, don haka kushin kuma yana buƙatar kariya mai kariya don hana iskar oxygen; sabili da haka, fitowar kushin fesa plating, wanda shine abin da muke yawan fada. Za a iya plated da inert karfe zinariya ko azurfa, kuma na iya zama na musamman sinadaran fim don hana jan karfe Layer na kushin ne fallasa zuwa iska ne oxidised (wannan da aka ambata a baya nutsewar zinariya farantin).
Saboda haka, solder masking mataki ne mai matukar muhimmanci a masana'antar PCB, kuma Sanxis Tech ya sanya tsauraran matakan sarrafa wannan tsari a cikin samarwa, don haka ana iya amincewa da ingancin abin rufe fuska.
